crypto/cryptlib.c - third_party/openssl - Git at Google

 /*
  * Copyright 1998-2022 The OpenSSL Project Authors. All Rights Reserved.
  * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
  *
  * Licensed under the Apache License 2.0 (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
  * in the file LICENSE in the source distribution or at
  * https://www.openssl.org/source/license.html
  */

 #include "internal/e_os.h"
 #include "crypto/cryptlib.h"
 #include <openssl/safestack.h>

 #if defined(_WIN32)
 # include <tchar.h>
 # include <signal.h>
 # ifdef __WATCOMC__
 #  if defined(_UNICODE) || defined(__UNICODE__)
 #   define _vsntprintf _vsnwprintf
 #  else
 #   define _vsntprintf _vsnprintf
 #  endif
 # endif
 # ifdef _MSC_VER
 #  define alloca _alloca
 # endif

 # if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
 #  ifdef OPENSSL_SYS_WIN_CORE

 int OPENSSL_isservice(void)
 {
     /* OneCore API cannot interact with GUI */
     return 1;
 }
 #  else
 int OPENSSL_isservice(void)
 {
     HWINSTA h;
     DWORD len;
     WCHAR *name;
     static union {
         void *p;
         FARPROC f;
     } _OPENSSL_isservice = {
         NULL
     };

     if (_OPENSSL_isservice.p == NULL) {
         HANDLE mod = GetModuleHandle(NULL);
         FARPROC f = NULL;

         if (mod != NULL)
             f = GetProcAddress(mod, "_OPENSSL_isservice");
         if (f == NULL)
             _OPENSSL_isservice.p = (void *)-1;
         else
             _OPENSSL_isservice.f = f;
     }

     if (_OPENSSL_isservice.p != (void *)-1)
         return (*_OPENSSL_isservice.f) ();

     h = GetProcessWindowStation();
     if (h == NULL)
         return -1;

     if (GetUserObjectInformationW(h, UOI_NAME, NULL, 0, &len) ||
         GetLastError() != ERROR_INSUFFICIENT_BUFFER)
         return -1;

     if (len > 512)
         return -1;              /* paranoia */
     len++, len &= ~1;           /* paranoia */
     name = (WCHAR *)alloca(len + sizeof(WCHAR));
     if (!GetUserObjectInformationW(h, UOI_NAME, name, len, &len))
         return -1;

     len++, len &= ~1;           /* paranoia */
     name[len / sizeof(WCHAR)] = L'\0'; /* paranoia */
 #   if 1
     /*
      * This doesn't cover "interactive" services [working with real
      * WinSta0's] nor programs started non-interactively by Task Scheduler
      * [those are working with SAWinSta].
      */
     if (wcsstr(name, L"Service-0x"))
         return 1;
 #   else
     /* This covers all non-interactive programs such as services. */
     if (!wcsstr(name, L"WinSta0"))
         return 1;
 #   endif
     else
         return 0;
 }
 #  endif
 # else
 int OPENSSL_isservice(void)
 {
     return 0;
 }
 # endif

 void OPENSSL_showfatal(const char *fmta, ...)
 {
     va_list ap;
     TCHAR buf[256];
     const TCHAR *fmt;
     /*
      * First check if it's a console application, in which case the
      * error message would be printed to standard error.
      * Windows CE does not have a concept of a console application,
      * so we need to guard the check.
      */
 # ifdef STD_ERROR_HANDLE
     HANDLE h;

     if ((h = GetStdHandle(STD_ERROR_HANDLE)) != NULL &&
         GetFileType(h) != FILE_TYPE_UNKNOWN) {
         /* must be console application */
         int len;
         DWORD out;

         va_start(ap, fmta);
         len = _vsnprintf((char *)buf, sizeof(buf), fmta, ap);
         WriteFile(h, buf, len < 0 ? sizeof(buf) : (DWORD) len, &out, NULL);
         va_end(ap);
         return;
     }
 # endif

     if (sizeof(TCHAR) == sizeof(char))
         fmt = (const TCHAR *)fmta;
     else
         do {
             int keepgoing;
             size_t len_0 = strlen(fmta) + 1, i;
             WCHAR *fmtw;

             fmtw = (WCHAR *)alloca(len_0 * sizeof(WCHAR));
             if (fmtw == NULL) {
                 fmt = (const TCHAR *)L"no stack?";
                 break;
             }
             if (!MultiByteToWideChar(CP_ACP, 0, fmta, len_0, fmtw, len_0))
                 for (i = 0; i < len_0; i++)
                     fmtw[i] = (WCHAR)fmta[i];
             for (i = 0; i < len_0; i++) {
                 if (fmtw[i] == L'%')
                     do {
                         keepgoing = 0;
                         switch (fmtw[i + 1]) {
                         case L'0':
                         case L'1':
                         case L'2':
                         case L'3':
                         case L'4':
                         case L'5':
                         case L'6':
                         case L'7':
                         case L'8':
                         case L'9':
                         case L'.':
                         case L'*':
                         case L'-':
                             i++;
                             keepgoing = 1;
                             break;
                         case L's':
                             fmtw[i + 1] = L'S';
                             break;
                         case L'S':
                             fmtw[i + 1] = L's';
                             break;
                         case L'c':
                             fmtw[i + 1] = L'C';
                             break;
                         case L'C':
                             fmtw[i + 1] = L'c';
                             break;
                         }
                     } while (keepgoing);
             }
             fmt = (const TCHAR *)fmtw;
         } while (0);

     va_start(ap, fmta);
     _vsntprintf(buf, OSSL_NELEM(buf) - 1, fmt, ap);
     buf[OSSL_NELEM(buf) - 1] = _T('\0');
     va_end(ap);

 # if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
 #  ifdef OPENSSL_SYS_WIN_CORE
     /* ONECORE is always NONGUI and NT >= 0x0601 */
 #   if !defined(NDEBUG)
         /*
         * We are in a situation where we tried to report a critical
         * error and this failed for some reason. As a last resort,
         * in debug builds, send output to the debugger or any other
         * tool like DebugView which can monitor the output.
         */
         OutputDebugString(buf);
 #   endif
 #  else
     /* this -------------v--- guards NT-specific calls */
     if (check_winnt() && OPENSSL_isservice() > 0) {
         HANDLE hEventLog = RegisterEventSource(NULL, _T("OpenSSL"));

         if (hEventLog != NULL) {
             const TCHAR *pmsg = buf;

             if (!ReportEvent(hEventLog, EVENTLOG_ERROR_TYPE, 0, 0, NULL,
                              1, 0, &pmsg, NULL)) {
 #   if !defined(NDEBUG)
                 /*
                  * We are in a situation where we tried to report a critical
                  * error and this failed for some reason. As a last resort,
                  * in debug builds, send output to the debugger or any other
                  * tool like DebugView which can monitor the output.
                  */
                 OutputDebugString(pmsg);
 #   endif
             }

             (void)DeregisterEventSource(hEventLog);
         }
     } else {
         MessageBox(NULL, buf, _T("OpenSSL: FATAL"), MB_OK | MB_ICONERROR);
     }
 #  endif
 # else
     MessageBox(NULL, buf, _T("OpenSSL: FATAL"), MB_OK | MB_ICONERROR);
 # endif
 }
 #else
 void OPENSSL_showfatal(const char *fmta, ...)
 {
 #ifndef OPENSSL_NO_STDIO
     va_list ap;

     va_start(ap, fmta);
     vfprintf(stderr, fmta, ap);
     va_end(ap);
 #endif
 }

 int OPENSSL_isservice(void)
 {
     return 0;
 }
 #endif

 void OPENSSL_die(const char *message, const char *file, int line)
 {
     OPENSSL_showfatal("%s:%d: OpenSSL internal error: %s\n",
                       file, line, message);
 #if !defined(_WIN32)
     abort();
 #else
     /*
      * Win32 abort() customarily shows a dialog, but we just did that...
      */
 # if !defined(_WIN32_WCE)
     raise(SIGABRT);
 # endif
     _exit(3);
 #endif
 }

 #if defined(__TANDEM) && defined(OPENSSL_VPROC)
 /*
  * Define a VPROC function for HP NonStop build crypto library.
  * This is used by platform version identification tools.
  * Do not inline this procedure or make it static.
  */
 # define OPENSSL_VPROC_STRING_(x)    x##_CRYPTO
 # define OPENSSL_VPROC_STRING(x)     OPENSSL_VPROC_STRING_(x)
 # define OPENSSL_VPROC_FUNC          OPENSSL_VPROC_STRING(OPENSSL_VPROC)
 void OPENSSL_VPROC_FUNC(void) {}
 #endif /* __TANDEM */
	/*
	* Copyright 1998-2022 The OpenSSL Project Authors. All Rights Reserved.
	* Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
	*
	* Licensed under the Apache License 2.0 (the "License"). You may not use
	* this file except in compliance with the License. You can obtain a copy
	* in the file LICENSE in the source distribution or at
	* https://www.openssl.org/source/license.html
	*/

	#include "internal/e_os.h"
	#include "crypto/cryptlib.h"
	#include <openssl/safestack.h>

	#if defined(_WIN32)
	# include <tchar.h>
	# include <signal.h>
	# ifdef __WATCOMC__
	# if defined(_UNICODE) \|\| defined(__UNICODE__)
	# define _vsntprintf _vsnwprintf
	# else
	# define _vsntprintf _vsnprintf
	# endif
	# endif
	# ifdef _MSC_VER
	# define alloca _alloca
	# endif

	# if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
	# ifdef OPENSSL_SYS_WIN_CORE

	int OPENSSL_isservice(void)
	{
	/* OneCore API cannot interact with GUI */
	return 1;
	}
	# else
	int OPENSSL_isservice(void)
	{
	HWINSTA h;
	DWORD len;
	WCHAR *name;
	static union {
	void *p;
	FARPROC f;
	} _OPENSSL_isservice = {
	NULL
	};

	if (_OPENSSL_isservice.p == NULL) {
	HANDLE mod = GetModuleHandle(NULL);
	FARPROC f = NULL;

	if (mod != NULL)
	f = GetProcAddress(mod, "_OPENSSL_isservice");
	if (f == NULL)
	_OPENSSL_isservice.p = (void *)-1;
	else
	_OPENSSL_isservice.f = f;
	}

	if (_OPENSSL_isservice.p != (void *)-1)
	return (*_OPENSSL_isservice.f) ();

	h = GetProcessWindowStation();
	if (h == NULL)
	return -1;

	if (GetUserObjectInformationW(h, UOI_NAME, NULL, 0, &len) \|\|
	GetLastError() != ERROR_INSUFFICIENT_BUFFER)
	return -1;

	if (len > 512)
	return -1; /* paranoia */
	len++, len &= ~1; /* paranoia */
	name = (WCHAR *)alloca(len + sizeof(WCHAR));
	if (!GetUserObjectInformationW(h, UOI_NAME, name, len, &len))
	return -1;

	len++, len &= ~1; /* paranoia */
	name[len / sizeof(WCHAR)] = L'\0'; /* paranoia */
	# if 1
	/*
	* This doesn't cover "interactive" services [working with real
	* WinSta0's] nor programs started non-interactively by Task Scheduler
	* [those are working with SAWinSta].
	*/
	if (wcsstr(name, L"Service-0x"))
	return 1;
	# else
	/* This covers all non-interactive programs such as services. */
	if (!wcsstr(name, L"WinSta0"))
	return 1;
	# endif
	else
	return 0;
	}
	# endif
	# else
	int OPENSSL_isservice(void)
	{
	return 0;
	}
	# endif

	void OPENSSL_showfatal(const char *fmta, ...)
	{
	va_list ap;
	TCHAR buf[256];
	const TCHAR *fmt;
	/*
	* First check if it's a console application, in which case the
	* error message would be printed to standard error.
	* Windows CE does not have a concept of a console application,
	* so we need to guard the check.
	*/
	# ifdef STD_ERROR_HANDLE
	HANDLE h;

	if ((h = GetStdHandle(STD_ERROR_HANDLE)) != NULL &&
	GetFileType(h) != FILE_TYPE_UNKNOWN) {
	/* must be console application */
	int len;
	DWORD out;

	va_start(ap, fmta);
	len = _vsnprintf((char *)buf, sizeof(buf), fmta, ap);
	WriteFile(h, buf, len < 0 ? sizeof(buf) : (DWORD) len, &out, NULL);
	va_end(ap);
	return;
	}
	# endif

	if (sizeof(TCHAR) == sizeof(char))
	fmt = (const TCHAR *)fmta;
	else
	do {
	int keepgoing;
	size_t len_0 = strlen(fmta) + 1, i;
	WCHAR *fmtw;

	fmtw = (WCHAR )alloca(len_0 sizeof(WCHAR));
	if (fmtw == NULL) {
	fmt = (const TCHAR *)L"no stack?";
	break;
	}
	if (!MultiByteToWideChar(CP_ACP, 0, fmta, len_0, fmtw, len_0))
	for (i = 0; i < len_0; i++)
	fmtw[i] = (WCHAR)fmta[i];
	for (i = 0; i < len_0; i++) {
	if (fmtw[i] == L'%')
	do {
	keepgoing = 0;
	switch (fmtw[i + 1]) {
	case L'0':
	case L'1':
	case L'2':
	case L'3':
	case L'4':
	case L'5':
	case L'6':
	case L'7':
	case L'8':
	case L'9':
	case L'.':
	case L'*':
	case L'-':
	i++;
	keepgoing = 1;
	break;
	case L's':
	fmtw[i + 1] = L'S';
	break;
	case L'S':
	fmtw[i + 1] = L's';
	break;
	case L'c':
	fmtw[i + 1] = L'C';
	break;
	case L'C':
	fmtw[i + 1] = L'c';
	break;
	}
	} while (keepgoing);
	}
	fmt = (const TCHAR *)fmtw;
	} while (0);

	va_start(ap, fmta);
	_vsntprintf(buf, OSSL_NELEM(buf) - 1, fmt, ap);
	buf[OSSL_NELEM(buf) - 1] = _T('\0');
	va_end(ap);

	# if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
	# ifdef OPENSSL_SYS_WIN_CORE
	/* ONECORE is always NONGUI and NT >= 0x0601 */
	# if !defined(NDEBUG)
	/*
	* We are in a situation where we tried to report a critical
	* error and this failed for some reason. As a last resort,
	* in debug builds, send output to the debugger or any other
	* tool like DebugView which can monitor the output.
	*/
	OutputDebugString(buf);
	# endif
	# else
	/* this -------------v--- guards NT-specific calls */
	if (check_winnt() && OPENSSL_isservice() > 0) {
	HANDLE hEventLog = RegisterEventSource(NULL, _T("OpenSSL"));

	if (hEventLog != NULL) {
	const TCHAR *pmsg = buf;

	if (!ReportEvent(hEventLog, EVENTLOG_ERROR_TYPE, 0, 0, NULL,
	1, 0, &pmsg, NULL)) {
	# if !defined(NDEBUG)
	/*
	* We are in a situation where we tried to report a critical
	* error and this failed for some reason. As a last resort,
	* in debug builds, send output to the debugger or any other
	* tool like DebugView which can monitor the output.
	*/
	OutputDebugString(pmsg);
	# endif
	}

	(void)DeregisterEventSource(hEventLog);
	}
	} else {
	MessageBox(NULL, buf, _T("OpenSSL: FATAL"), MB_OK \| MB_ICONERROR);
	}
	# endif
	# else
	MessageBox(NULL, buf, _T("OpenSSL: FATAL"), MB_OK \| MB_ICONERROR);
	# endif
	}
	#else
	void OPENSSL_showfatal(const char *fmta, ...)
	{
	#ifndef OPENSSL_NO_STDIO
	va_list ap;

	va_start(ap, fmta);
	vfprintf(stderr, fmta, ap);
	va_end(ap);
	#endif
	}

	int OPENSSL_isservice(void)
	{
	return 0;
	}
	#endif

	void OPENSSL_die(const char message, const char file, int line)
	{
	OPENSSL_showfatal("%s:%d: OpenSSL internal error: %s\n",
	file, line, message);
	#if !defined(_WIN32)
	abort();
	#else
	/*
	* Win32 abort() customarily shows a dialog, but we just did that...
	*/
	# if !defined(_WIN32_WCE)
	raise(SIGABRT);
	# endif
	_exit(3);
	#endif
	}

	#if defined(__TANDEM) && defined(OPENSSL_VPROC)
	/*
	* Define a VPROC function for HP NonStop build crypto library.
	* This is used by platform version identification tools.
	* Do not inline this procedure or make it static.
	*/
	# define OPENSSL_VPROC_STRING_(x) x##_CRYPTO
	# define OPENSSL_VPROC_STRING(x) OPENSSL_VPROC_STRING_(x)
	# define OPENSSL_VPROC_FUNC OPENSSL_VPROC_STRING(OPENSSL_VPROC)
	void OPENSSL_VPROC_FUNC(void) {}
	#endif /* __TANDEM */